MAHLE 4075MDK-D Duramax Diesel Piston Ring Set 4.075" Bore .020" Oversize

The MAHLE 4075MDK-D is a high-performance diesel piston ring set designed specifically for GM 6.6L Duramax engines with .020" overbore (4.075" bore diameter). This complete 8-cylinder ring set features advanced steel construction optimized for diesel applications and is engineered to work with MAHLE Race Cast performance pistons (part #930036075).

Key Features:

• 4.075" bore diameter (.020" oversize) for precision fit
• 3.0K tension rating with 2.0mm and 3.0mm ring widths
• Steel diesel construction for enhanced durability and heat resistance
• Stainless steel top ring with advanced sealing technology
• Drop-in design for simplified installation
• Complete set for 8-cylinder applications
• Designed specifically for MAHLE Motorsport performance pistons

MAHLE piston rings are engineered to seal the combustion chamber effectively, preventing gases from entering the crankcase and oil from entering the combustion chamber. This ring set is ideal for engine rebuilds, performance upgrades, or when addressing oil consumption and compression loss issues. Note that this ring set is designed exclusively for use with MAHLE Race Cast pistons and will not fit stock pistons or other aftermarket piston brands. Cross-references GM part number 89017485 and supersedes MAHLE part numbers 41909 and 42160.